Oregon ZooAn Oregon spotted frog in a holding tank at the Oregon Zoo. The zoo is part of a program that raises the endangered frogs and then releases them to their historical habitats in Washington.It's the second year that the tiny frogs have been released at Dailman Lake, which is part of the frogs' historic habitat. Some of the frogs were raised at the Oregon Zoo in a program to protect and enhance populations of Oregon spotted frogs. The Oregonian has previously written a story about the program.

The frogs once ranged from southwestern British Columbia to northeastern California. But loss of habitat and nonnative predators decimated their numbers, and the state listed it as endangered in 1997. The frog now is only known to be in Washington's Klickitat and Thurston counties.